Fountain-pen.



F. W. VAUGHN, J11. & H. J. UPTON.

FOUNTAIN PEN.

APPLICATION FILED NOV. 15. 1911.

Patented Aug. 13, 1912.

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UNITED STATES PATENT OFFICE.

FRANCIS VAUGHN, JR, -OF WEST MEIDFOBD, AND HENZEY J. UPTON, 0F BOZMIEB-VILLE, MASSACHUSETTS, ASSIGNOBS TD VAUGHN-UPTON COMPANY, OF BOSTON,MASSACHUSETTS, A CORPORATION OF .MTESSKCH'USETTS.

, FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Aug. 13, 1912.

Application filed November 15, 1911. Serial No. 660,861.

To all whom it may concern:

Be it known that we, FRANCIS W. VAUGHN, J r., and HENRY J. UPTON,citizens ofthe United States, residing at West Medford and Somerville,respectively, in the county of Middlesex and State of Massachusetts,have invented new and useful Imrovements in Fountain-Pens, of which theollowing is a specification.

Our invention relates to fountain pens and particularly to that kind offountain pen in which provision is made for thoroughly inclosing the inkwhen the pen is not in use so that it will not escape to the detrimentof the user.

The object of our invention is to provide an improved construction ofthe cap of the pen so that when the latter is closed the ink will beperfectly confined within the fountain of the pen and cannot escape tothe exterior of the latter. To accomplish this we provide an auxiliarycap. within the main cap of the pen, which auxiliary cap is adapted tofit tightly against the open end of the fountain and effectually,connect with the same so that any ink which may pass out of the end ofthe fountain will be received in the auxiliary'cap and cannot reach theinner surface of the main ca or in any wa travel down to the outer surace of the en of the fountain where the fingers of the user rest in theactof writing. This auxiliary cap is held within the main ca by afriction de- .vice and is provided wit means to give it a slightyielding capacity so that it may seat.

In the accompanying drawings: Figure 1 is a central longitudinalsectional view of one end of a pen with a cap embodying our invention;Fig. 2 is a longitudinal sectional view of the cap shown in Fig. 1detached from the pen; Fig. 3 is a cross section of the cap shown inFig. 2 on line 3-3; Fig. 4 is a view, part1 in section, of a cap em,-bodying a modi ed form of our invention; and Fi 5 is a section on line55 of Fig. 4.

In, Fig. 1 it will be observed that the end of the pen fountain A andthe inner surface of the main cap B are provided with screw threads, aand b respectively, by means of WhlCh the main cap may be screwed uponthe end of the fountain and positively held in place by the screwthreads. The inner or auxiliary cap D is fitted as to its exteriordiameter to the interior bore of the main cap. Between its closed endand the inner 'end of the outer cap is interposed a cushion of softpacking 41;, preferably of soft rubber, and the inner cap has u on itsouter surface an annular oove'-d' into which is sprung-a split frictionring C of resilient material, preferably spring steel. The ring (1' issprung into the groove d and the cap with itSTIlCtlOIl ring inserted inthe outer cap and pushed toward the upper end thereof where it isretained by the frictional engag'ement of the ring C with the innerwalls of the main cap. In operation the main cap is put over the end ofthe fountain and the screw threads a, b, enga ed and the main capscrewed down upon t e fountain. The gold pen enters into the inner cap Dand as the cap is screwed to position, the open end of the cap D isbrought into contact with the open end of the fountain, the walls of thefountain and the cap D contacting and fitting together to form a liquidtight joint. The upper end of the main cap B contacts with the rubberpad m and presses the inner cap upon the open end of the fountain with ayielding but firm pressure, giving a slight opportunity. for the innercap ,to rock and seat itself firmly in case of any an outer or main cap;an auxiliary cap Signed by us at Boston, Mass. this 13th Within the maincap, a spring friction mem day of November, 1911.

ber interposed to retain the inner cap in v FRANCIS W. VAUGHN, JR. placeand a cushion of soft packing inter- HENRY J UPTON.

posed between the upper'end of the inner VVit-nesses:

cap and the inner side of the top of the JOSEPH T. BRENNAN,

main cap. MARY A. OBRIEN.

